Algebraic deformations arising from orbifolds with discrete torsion Academic Article uri icon


  • We develop methods for computing Hochschild cohomology groups and deformations of crossed product rings. We use these methods to find deformations of a ring associated to a particular orbifold with discrete torsion, and give a presentation of the center of the resulting deformed ring. This connects with earlier calculations by Vafa and Witten of chiral numbers and deformations of a similar orbifold. 2003 Elsevier B.V. All rights reserved.

published proceedings

  • Journal of Pure and Applied Algebra

author list (cited authors)

  • Cldraru, A., Giaquinto, A., & Witherspoon, S.

citation count

  • 18

complete list of authors

  • Căldăraru, Andrei||Giaquinto, Anthony||Witherspoon, Sarah

publication date

  • January 2004